December 2015
Intermediate to advanced
298 pages
5h 30m
English
Content preview from Scala Functional Programming PatternsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
The problem – grouping continuous integers
A while back, I wanted a simple and elegant way to solve the following problem:
Given: A sorted list of numbers
When: We group these numbers
Then: Each number in a group is higher by one than its predecessor. So, let's be good and write a few tests first:
@Test public void testFourGroup() { List<Integer> list = Lists.newArrayList(1, 2, 3, 4, 5, 9, 11, 20, 21, 22); List<List<Integer>> groups = groupThem.groupThem(list); assertThat(groups.size(), equalTo(4)); assertThat(groups.get(0), contains(1, 2, 3, 4, 5)); assertThat(groups.get(1), contains(9)); assertThat(groups.get(2), contains(11)); assertThat(groups.get(3), contains(20, 21, 22)); } @Test public void testNoGroup() { List<Integer> emptyList = Lists.newArrayList(); ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.